$OpenBSD: patch-libtiff_tif_extension_c,v 1.4 2012/04/14 15:09:55 naddy Exp $
--- libtiff/tif_extension.c.orig	Wed Apr 11 18:27:24 2012
+++ libtiff/tif_extension.c	Wed Apr 11 18:28:53 2012
@@ -81,6 +81,7 @@ void TIFFSetClientInfo( TIFF *tif, void *data, const c
 
 {
     TIFFClientInfoLink *link = tif->tif_clientinfo;
+    size_t namelen = strlen(name);
 
     /*
     ** Do we have an existing link with this name?  If so, just
@@ -102,9 +103,9 @@ void TIFFSetClientInfo( TIFF *tif, void *data, const c
     link = (TIFFClientInfoLink *) _TIFFmalloc(sizeof(TIFFClientInfoLink));
     assert (link != NULL);
     link->next = tif->tif_clientinfo;
-    link->name = (char *) _TIFFmalloc((tmsize_t)(strlen(name)+1));
+    link->name = (char *) _TIFFmalloc((tmsize_t)(namelen+1));
     assert (link->name != NULL);
-    strcpy(link->name, name);
+    strlcpy(link->name, name, namelen+1);
     link->data = data;
 
     tif->tif_clientinfo = link;
